building block
noun/ˈbɪldɪŋ blɒk/
/ˈbɪldɪŋ blɑːk/
- [countable] a piece of wood or plastic used as a toy for children to build things withTopics Games and toysc1
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- building blocks[plural] parts that are joined together in order to make a large thing exist
- Single words are the building blocks of language.
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building block